]> GH barcode-02164830 United States of America Maryland Vicinity of Bryan Point and the Potomac River. 0.0-0.5 mi E of Charles Co. line. 1 mi S of Bryan Point, at the head of main gorge, Cactus Hill. Dendrolycopodium obscurum (Linnaeus) A. Haines (Linnaeus) A. Haines 2020-12-07 09:20:39 S. R. Hill & M. A. Klein